#coding:utf-8
'''
Created on 2018��3��20��

@author: 97234
'''

L1 = ['a','b','c','d','e']
print(L1)
print(L1[0])
print(L1[1])
print(L1[4])
print(L1[3])
L1.insert(0, 0)
L1.insert(-1, 100)
L1.append('python')
L1.pop(3)
L1.pop()
print(L1)
L2 = []
for i in xrange(0,101):
    L2.append(i)
print(L2)
print(L2[0:21])
print(L2[21:41])